Brief Description: Continue Stub Spar Assemblies Left and Right
Machine Countersunk 120 degrees the W-1208C-L & -R Stub Spar Channels per dimensions in figure 2 reference page on the outer surface of all the holes in both flanges as called out in figure 3 same page. Used a 1/4 inch hole in scrap sheet metal as a guage to check the maximum diameter.
Machine Coutersunk 100 degres the three holes at the inboard end of the Right Stub Spar Assembly to fit the head of an AN426AD3 rivet as called out in figure 3 same page.
Riveted the Right Stub Spar Assembly together at the holes called out in figure 3 same page keeping the flush rivets as close to flush on both the machine and shop head as possible. Using 3 AN426AD3-3 rivets and 8 AN470AD4-4 rivets.
Set aside the Right Stub Spar Assembly for section 15.
